Engine-valve lifter



A. WILLIS.

ENGINE VALVE LIFTER.

APPLICATION FILED MAY 23. 1918.

1,383,358. Patented Mar. 9, 1920.

AUNrrnD STATES "PATENT OFFICEv ADRIAN W1LLIs',oFfM-mes, anomala. y Y

nNeINEsvALvE" L17-Erna.

Specification of `LettersPatent Patented', Malti), 192.0.

Application led May 23, 1918.KV SeriaINo. 236,167.

To all whom t may concern.'

Be it known that I, ADRIAN WILLIS, l a citizen of the United States of America, residing at Meigs, in the county of Thomas and State of Georgia, have invented new and use- 'ful Improvements in Engine-Valve Lifters,

which may be easily andcheaply manufactured.

Other and further purposes of the invention appear hereinafter wherein the construction is set forth in detail.

The invention, while shown and described in but one embodiment, is not to be restricted to such. The right is reserved to vary the Vdetails of construction in any manner suggested by the actual practical use, provided such variations are compatible with the spirit of the subjoined claim.

ln the accompanying' drawings:

Figure 1 is a view in side elevation showing the practical application of the invention; Y

Fig. 2 is a plan view of the lifter per se;

Fig. 3 is a section on the line 3 3 of Fig. 1.

For shown the valve stem l, the valve spring 2 and the valve stem guide 3 ofv an internal combustion engine, such as is used in auto vehicles Yand the like. The improved tool, employed lto relieve the stem 1 of the pressure of the spring 2 and to ythat end, it is formed with a body member A and the bell crank lever B. The body member A is J- shaped, as shown and Vat the free en d of its longer leg 4C it is bifurcated providing the fork 5. The shorter or curved leg 6 is also bifurcated for the purposeof Vproviding the the purpose of illustration there isend is formed with a fork 10. The shorter leg 11 is so formed that, when the fork 10 lies close to the fork 5, it may lie adjacent the inner curved face of the leg 6 of the body member A.

This curved or shorter leg 6 of the body member has formed therein a threaded hole through which the thumb screw 12 passes,

.this thumb screw being so positioned that its end will engage upon the side ofthe shorter leg 11 of the lever B.

ln the use of the tool, the thumb screw 12 is backed out so that the two forks l0 andl 5 may lie one on top of the other.y The two are then madey to straddle the valve stem 1, whereuponthe turning ofthe thumb screw 12 in the proper direction will serve to sepa-l rate the two forks, thus compressing the valve spring 2 because of the fact that the fork 5 lies upon the valve stem guide 3 while the fork 10 bears againstv the 'spring 2. It

. will thus be seen that the valve stem and of course the valve are relieved from the pressure of the spring, whereupon they may be removed or handled with ease.

It will be observed that the peculiar construction of the tool permits the use of the thumb screw to be used to separate the two forks and thus hold the valve spring under compression, but further than. this, it is apparent that, the two forks being first inserted between the spring and the valve stem guide 3, a wedge may be inserted between the leg 10 of the lever B and `the leg 6 of the body member A, thus permitting Vthe quick operation of the two forks and the consequent relieving of the value of the pressure of the spring. Such a wedge may also be quickly withdrawn to permit the resumption of the former positions of the valve and spring. This is convenient, of course, only when it is desired toraise the spring temporarily to test the valve for freedom of action and this subterfuge is mentioned only to cite one of the many advantages of the peculiar construction yof the tool,

The invention having been described, what is claimed as new and useful is:

A tool of thel kind set forth comprising a J-shaped body having a fork formed at the free end of its longer leg and being bifurcated at the free end of'its shorter leg to leave two relatively short legs, a .bell crank lever also having a fork formed at the lfree end of its longer leg and having its shorter leg facing the inner face of the shorter leg the two relatively short legs on the shorter leg of the body member, a pin passing be- 5 tween the two said relatively short legs and.l

vthrough the bell crank lever, and .a thumb? screw carried by and threadngly engaging the shorter leg of the body member and havingits free end bear upon the shorter leg of the bell crank lever for the useful purpose 10 speclied.

In testimony whereof I alix my signature.

ADRIAN WILLIS. 

